Code No. P0670:
Glow Control Relay
DIAGNOSIS CONTENT
Glow control relay internal error
TROUBLE JUDGMENT
Check Condition
Judgment Criterion
- Glow control relay internal error.
DIAGNOSIS CONTENTS
3 different coding words received
TROUBLE JUDGMENT
Check Condition
Judgment Criterion
- Glow control relay coding error.
DIAGNOSIS CONTENT
Coding glow control relay different to engine-ECU
TROUBLE JUDGMENT
Check Condition
Judgment Criterion
- Glow control relay coding error.
FAIL SAFE FUNCTION
- Glow control is prohibited.
PROBABLE CAUSE
- Failed glow control relay
- Failed electrical harness in glow control relay circuit
- Failed engine-ECU
(Refer to Symptom Procedure - Glow System 
.)